Are anti-skate studs suitable for coastal environments?

Can anti-skate studs be used in coastal locations?

Anti-skate studs can be used in coastal locations, with the key consideration being the use of a marine-grade 316L stainless steel variant, such as those used throughout the Studmarc anti-skate range.

316L stainless steel is well suited to seaside and coastal environments where airborne salts and chlorides can degrade less corrosion-resistant metals. It provides greater resistance to chloride-induced corrosion than grades such as 303 or 304 stainless steels.

Suitability will still depend on the severity of the exposure, the surface finish and whether the stud is likely to be regularly exposed to, or submerged in, seawater.

Why are coastal environments more demanding on anti-skate studs?

Coastal environments expose architectural metalwork to increased levels of contaminants and harsher weather conditions, including:

• Windborne sea spray
• High tides and rough waves that may expose or temporarily submerge metalwork
• Airborne chlorides
• Resulting salt deposits
• Moisture
• High humidity

These conditions can increase the risk of surface staining and corrosion, potentially affecting both the appearance and long-term durability of anti-skate studs if an unsuitable material or finish is specified.

Salt does not have to be physically splashed directly onto the studs. Windborne sea spray and mist can deposit chlorides onto exposed metalwork, which means proximity to the sea alone does not necessarily determine the level of chloride exposure.

Why is 316L stainless steel used for coastal anti-skate studs?

Studmarc manufactures its anti-skate studs from 316L stainless steel as standard. The addition of molybdenum gives 316 grade greater resistance to chloride-induced corrosion than 304 stainless steel. This makes it considerably more reliable and better suited to coastal applications.

For a more detailed explanation of the material, see What is 316 marine-grade stainless steel? or read What’s the difference between 304 and 316 stainless steel?.

Does distance from the sea affect the suitability of anti-skate studs?

There is no fixed distance at which an installation becomes strictly coastal. The level of exposure will depend on several factors, including:

• Prevailing wind – wind can carry airborne salt and chlorides considerable distances inland, particularly in exposed locations.
• Exposure to sea spray – direct sea spray presents a higher level of exposure, but fine salt-laden mist can also travel beyond the immediate shoreline.
• Local humidity – high humidity and persistent moisture can increase the amount of time salt deposits remain wet on the surface, increasing the risk of corrosion.
• Rainfall – rainfall can deposit airborne contaminants onto exposed metalwork, but clean, heavy rainfall can also help wash accumulated salt deposits from the surface.
• Relative sheltering of the installation – overhead and vertical barriers, such as shelters, can reduce direct exposure to sea spray and airborne contaminants. However, sheltered areas may also receive less natural rain washing.
• How often salt deposits are removed from the surface – regular cleaning can reduce the build-up of chloride deposits and help mitigate some of the effects of a coastal installation.

An installation further inland that regularly receives windborne salt may experience greater chloride exposure than one much closer to the sea but protected from the prevailing wind and direct spray.

Conversely, a sheltered installation can sometimes retain salt deposits for longer because it receives less rainfall to wash the surface naturally. For this reason, distance from the sea alone should not be used to determine whether an anti-skate installation is suitable for a coastal environment.

Does the finish of an anti-skate stud matter in coastal environments?

The material and grade of that material are the primary considerations for coastal environments, with the surface finish also playing an important role.

The finish of an anti-skate stud can affect how readily contaminants remain on the surface of the steel. In general, smoother finishes are easier to keep clean and provide fewer irregularities where salt deposits and other contaminants can accumulate.

Studmarc anti-skate studs are supplied with a polished finish as standard, which is particularly well suited to external and coastal applications. Other finishes, such as satin, may be available, but their comparatively rougher surface can retain deposits more readily and may require greater attention to cleaning and maintenance in aggressive coastal environments.

This is not a steadfast rule. The importance of the finish will also depend on the severity of exposure, whether the installation is sheltered, how frequently the surface is cleaned and the overall conditions at the site.

Do anti-skate studs require maintenance near the coast?

To maximise the lifespan of anti-skate studs, it is good practice to clean them periodically, even when they are manufactured from 316L stainless steel.

Maintaining anti-skate studs in coastal environments is generally straightforward. In most cases, the studs can simply be rinsed with clean tap water to remove accumulated salt and dirt. A pressure washer can be used where appropriate, or the studs can be rinsed and wiped down with a clean cloth.

Regular cleaning helps prevent salt deposits and other contaminants from building up on the surface. Anti-skate studs installed in sheltered locations may require slightly more attention because they receive less natural rain washing than fully exposed installations.

The appropriate cleaning frequency will depend on the severity of the environment. In light to moderate coastal exposure, cleaning every couple of months may be sufficient, while more aggressive or heavily exposed locations may benefit from monthly cleaning or inspection.

Can anti-skate studs be installed on seafront walls and street furniture?

They absolutely can, and seafront locations are one of the most common environments in which Studmarc anti-skate studs are used. Long, continuous promenade walls, coping stones and public-realm furniture can all provide attractive surfaces for grinding and sliding, making them common candidates for anti-skate protection.

Typical installation locations include:

• Promenade walls
• Coping stones
• Seafront benches and seating
• Public-realm furniture, including planters and bins
• Handrails
• External ledges

The substrate will heavily influence the most appropriate fixing method, so this should always be considered when specifying the stud and installation method.

For more information on compatible substrates, see What surfaces can anti-skate studs be installed on?.

Are 316L anti-skate studs suitable for direct seawater exposure?

316 and 316L stainless steel are widely used in coastal environments and can tolerate intermittent exposure to seawater, but that does not mean anti-skate studs should be specified for prolonged or permanent seawater immersion.

316L is commonly described as a marine-grade stainless steel because of its improved resistance to chlorides, but it is not immune to corrosion. Brief or occasional seawater exposure, such as overtopping during high tides or rough weather, is generally very different from remaining submerged for extended periods.

Where anti-skate studs are likely to be regularly submerged, remain wet for long periods or be exposed to particularly aggressive marine conditions, the application should be assessed separately rather than assuming that 316L alone makes the installation suitable.

Which anti-skate studs should I specify for a coastal project?

Studmarc’s anti-skate stud range is manufactured from marine-grade 316L stainless steel as standard, providing a suitable starting point for most external and coastal anti-skate applications.

The specific model should then be selected according to factors including:

• Installation surface
• Edge profile or radius
• Required coverage
• Level of coastal exposure
• Fixing method
• Appearance

For example, a flat wall or ledge may require a different anti-skate stud from a radiused coping stone or handrail. The environmental conditions determine the material requirements, while the shape and construction of the surface determine which stud design is most suitable.

For more information on matching a product to a particular installation, see How do I choose the right anti-skate stud?.

To see an example of a coastal environment being protected using anti-skate studs, check out our case study on Porthcawl Promenade.